Crates / bigdecimal / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to bigdecimal
Short answerThe closest alternatives to bigdecimal on crates.io data are num (812K real downloads a day), num-bigint-dig (672K real downloads a day), rust_decimal (463K real downloads a day). Of the 8 we list, the most used is num-complex, and 5 shipped a release in the last year. bigdecimal itself gets 365,613 a day with 588 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs bigdecimal | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| num Widely used | 811,973 | 2.22x | 2,024 | 21mo | category Science, keyword "bignum", keyword "numerics" | side by side |
| num-bigint-dig Pulled in | 672,015 | 1.84x | 97 | 11mo | category Science, keyword "bignum", keyword "numerics" | compare |
| rust_decimal Widely used | 463,122 | 1.27x | 2,295 | 52d | category Mathematics, category Science, keyword "decimal" | compare |
| num-complex Widely used | 1,201,013 | 3.28x | 1,140 | 21mo | category Science, keyword "numerics" | compare |
| num-iter Pulled in | 1,144,112 | 3.13x | 32 | 4mo | category No standard library, category Science, keyword "numerics" | compare |
| num-rational Established | 1,035,328 | 2.83x | 456 | 21mo | category Science, keyword "numerics" | compare |
| crypto-bigint Established | 937,488 | 2.56x | 167 | 1d | category Mathematics, category No standard library, keyword "bignum" | compare |
| num-derive Widely used | 667,655 | 1.83x | 1,317 | 3mo | category Science, keyword "numerics" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with bigdecimal; read its description before you swap.
- More dependents means more answered questions and a smaller chance it disappears.
- Check the last release against how fast you need fixes. For bigdecimal: is it still maintained?
Rules
Alternatives = tracked crates (top 1000 by downloads) that share a specific crates.io category (2 points each) or keyword (3 points each) with bigdecimal, most similar first; its own parts (same name prefix) and crates it depends on or that depend on it are left out, because those are companions, not substitutes. Real downloads = quiet-day median, crates.io data Oct 24, 2026. Built when we find 3 or more.
Up next
The closest alternative: Widely used and gaining. 811,973 real downloads a day.numRust crate. A collection of numeric types and traits for Rust, including bigint, complex, rational, range iterators, generic integers, and more!. Real use: 812K...Read it next →Also worth your time